Thanks Bob for posting this link.
Gems like this provide enjoyable reading and can be drawn upon again and again.
Jerry Masters, a friend I have often researched with at the MNHS, who is also a civil engineer and former railroad employee of the NP, later BN said that " a good mans idea on one railroad is a good idea on any mans railroad. An oak 12 x 12 timber has the same load characteristics on one railroad as it does on another. The same with a truss or a beam."
Books like this are examples of people who felt the same way.
again, thank you. Jim Dick - Roseville, MN